org.teiid.metadata

Class AggregateAttributes

java.lang.Object

org.teiid.metadata.AggregateAttributes

All Implemented Interfaces:

Serializable

public class AggregateAttributes
extends Object
implements Serializable

Holds metadata related to user defined aggregate functions.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AggregateAttributes()

Method Summary

Modifier and Type	Method and Description
boolean	allowsDistinct()
boolean	allowsOrderBy()
boolean	isAnalytic()
boolean	isDecomposable()
void	setAllowsDistinct(boolean allowsDistinct)
void	setAllowsOrderBy(boolean allowsOrderBy)
void	setAnalytic(boolean analytic)
void	setDecomposable(boolean decomposable)
void	setUsesDistinctRows(boolean usesDistinctRows)
boolean	usesDistinctRows()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AggregateAttributes

public AggregateAttributes()

Method Detail

allowsOrderBy

public boolean allowsOrderBy()

Returns:

true if the aggregate allows an order by clause

setAllowsOrderBy

public void setAllowsOrderBy(boolean allowsOrderBy)

isAnalytic

public boolean isAnalytic()

Returns:

true if the aggregate can only be used as a windowed function

setAnalytic

public void setAnalytic(boolean analytic)

usesDistinctRows

public boolean usesDistinctRows()

Returns:

True if the aggregate function specified without the distinct keyword effectively uses only distinct rows. For example min/max would return true and avg would return false.

setUsesDistinctRows

public void setUsesDistinctRows(boolean usesDistinctRows)

isDecomposable

public boolean isDecomposable()

Returns:

true if the aggregate function may be decomposed as agg(agg(x)) for non-partitioned aggregate pushdown. This is only meaningful for single argument aggregate functions.

setDecomposable

public void setDecomposable(boolean decomposable)

allowsDistinct

public boolean allowsDistinct()

Returns:

true if the aggregate function can use the DISTINCT keyword

setAllowsDistinct

public void setAllowsDistinct(boolean allowsDistinct)